CPUs you can use with a 450W PSU
Assuming you already have a ~100W GPU, here's a compiled list of possible CPUs you can use:
| CPU | TDP | Quick Buy |
|---|---|---|
| AMD Ryzen 7 5800X3D | 105W |
|
| AMD Ryzen 5 7600X | 105W |
|
| AMD Ryzen 7 7700X | 105W |
|
| AMD Ryzen 5 7500F | 65W |
|
| AMD Ryzen 5 5500 | 65W |
|
| AMD Ryzen 5 5600 | 65W |
|
| AMD Ryzen 7 5700X | 65W |
|
| Intel Core i5-12400F | 65W |
|
| AMD Ryzen 5 5600G | 65W |
|
| AMD Ryzen 7 5700G | 65W |
|
What CPUs can you use with a 450W power supply?
First of all we have to make an assumption regarding the rest of your PC, let's start by assuming you have a ~100W GPU. Also, we can assume that the rest of your PC components (MB, RAM, Fans, Storage, etc...) consume an additional 100W, and we'll have an additional 100W of margin. That leaves us with 105W for the CPU.
With 105W you can squeeze in CPUs such as AMD Ryzen 7 5800X3D, AMD Ryzen 5 7600X, AMD Ryzen 7 7700X, AMD Ryzen 5 7500F, AMD Ryzen 5 5500.